Currently, The HP CLJ-4500-4550 is the laser printer have high speed, easy to use, friendly for user and printing clear text.

However, we can not avoid the damage of some components of the printer when used.
In this article, I will introduce some basic errors with printing quality problems of HP CLJ-4500-4550 printer and “How to fix it”.
After viewed artical, you know:
– How to fix (repair/solve) Vertical line (black or white) in HP CLJ-4500-4550 printer
– How to fix (repair/solve) Poor fusing (loose toner) in HP CLJ-4500-4550 printer
– How to fix (repair/solve) Uneven Density in HP CLJ-4500-4550 printer
– How to fix (repair/solve) Light image in HP CLJ-4500-4550 printer
– How to fix (repair/solve) Ghost in HP CLJ-4500-4550 printer

This plobrem “Vertical line” is usally error of HP CLJ-4500-4550 printer. For this “Vertical line” error, technicians divided into two smaller error are: Vertical black line and band and Vertical white line.

Description:

– Vertical line and band: On the printed image appear some straight thin black vertical.

Cause of error “Uneven Density”:

– The pressure force on the left and right springs of the transfer roller is not even.
– May be toner low also causes this error
– Doctor blade has bent
How to repair error “Uneven Density” on the printed page for HP CLJ-4500-4550 printer:
– Replace springs and transfer roller.
– Toner refill toner cartridge HP CLJ-4500-4550 and reset toner cartridge chip (replace new chip) or replace new genuine toner cartridge.
– Replace doctor blade.

Description: The printed image is all light and no Ghost.Error location: Toner cartridge, Developer, HVPS board

Cause of error “Light image” on the printed page

– Enabled toner save.
– Toner cartridge is low
– OPC drum may be faulty by strong light intensity
– Temperature in room is below than 10*C
– Bad contact caused by the toner dirty between the high voltage terminal in the HVPS and the one in the set
– Abnormalities output from the HVPS

How to fix(repair) error “Light image” on the printed page for HP CLJ-4500-4550 printer:

– Disable toner save by change in printer driver.
– Toner refill toner cartridge HP CLJ-4500-4550 and reset toner cartridge chip (replace new chip) or replace new genuine toner cartridge.
– Replace the OPC drum.
– Replace developer.
– After printer is power on, wait 30 minutes then start printing
– Clean up the contact between the high voltage terminal in the HVPS and the one in the se- Replace the new HVPS if the problems are not solved by 4 away above.

Cause of error “Light image” on the printed page

How to fix(repair) error “Light image” on the printed page for HP CLJ-4500-4550 printer:

– Replace OPC drum

– Replace transfer roller

– If performed 2 away and the error does not clear, you should replace ganuine toner cartridge .

– Replacce HVPS board.

So, I just show you the error of common print quality of HP CLJ-4500-4550 printer. I wish you can fix your printer to print good quality.
More details, you view in “HP CLJ-4500-4550 Service Repair Manual”.
You can pay it at the following: